Method for breeding multiple generations of paddy rice in one year

A technology for rice seeds and rice, applied in the field of breeding, can solve the problems of long breeding cycle of rice and shorten the growth period of rice, and achieve the effects of speeding up the breeding process, shortening the breeding process and solving the long breeding cycle.

Inactive Publication Date: 2015-08-26
ZHEJIANG JIAXING AGRI SCI ACADEMY INST
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a rice multi-generation breeding method, which solves the problem of too long rice breeding cycle from the perspective of crop cultivation, shorte

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for breeding multiple generations of paddy rice in one year
  • Method for breeding multiple generations of paddy rice in one year

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 1

[0028] Embodiment 1 Five generations of breeding in one year

[0029] 1. Experimental location: the experimental field of Jiaxing Academy of Agricultural Sciences and Nanling Breeding Base, Yelin Town, Lingshui County, Hainan

[0030] 2. Experimental materials: naked late japonica rice Jia 64 (female parent), early-maturing late japonica non-light-leaved variety Jia 33 (male parent)

[0031] 3. Sowing date: the first season: sowing on May 25, 2009 (the first season was in Jiaxing, the rest in Hainan); the second season: sowing on September 22, 2009; the third season: November 26, 2009 Sowing; fourth season: sowing on February 23, 2010; fifth season: sowing in early May, 2010.

[0032] 4. Breeding methods

[0033] (1) Take the rice parent seeds, soak them in nitric acid aqueous solution for 58 hours, completely eliminate the dormancy of the seeds, rinse them with water for 3 to 5 times, put them in a constant temperature box at 30°C to accelerate germination, until 80% of the...

Embodiment 2 1

[0047] Embodiment 2 Breeding for four generations a year

[0048] 1. Experimental location: the experimental field of Jiaxing Academy of Agricultural Sciences and Nanling Breeding Base, Yelin Town, Lingshui County, Hainan

[0049] 2. Experimental materials: naked late japonica rice Jia 0664 (male parent), early-maturing late japonica variety Jia 33 (female parent)

[0050] 3. Sowing date: Season 1: Sowing in Hainan in early October 2006; Season 2: Sowing in Hainan on December 30, 2006; Season 3: Sowing in Hainan on March 20, 2007; Season 4: June 2007 Jiaxing planted seeds on the 10th.

[0051] 4. Breeding methods

[0052] (1) Take the parent rice seeds, soak them in nitric acid aqueous solution for 60 hours, completely eliminate the dormancy of the seeds, rinse them with water for 3 to 5 times, put them in a constant temperature box at 30°C to accelerate germination, until 80% of the seeds are broken. , to broadcast live.

[0053] The preparation method of the nitric acid ...

Embodiment 3 1

[0062] Example 3 Three generations of breeding in one year

[0063] 1. Experimental location: the experimental field of Jiaxing Academy of Agricultural Sciences and Nanling Breeding Base, Yelin Town, Lingshui County, Hainan

[0064] 2. Experimental materials: high-quality late japonica rice variety Jia 991 (female parent), dwarf japonica line with large spikes and high yield single test 56 (male parent)

[0065] 3. Sowing date: hybridization in Jiaxing in autumn 1999, Hainan F in October 1999 1 Seeding, December 1999 Hainan F 2 Seeding, Jiaxing F, May 2000 3 Seeding, October 2000 Hainan F 4 Seeding, December 2000 Hainan F 5 Seeding, Jiaxing F, May 2001 6 Sowing, basically finalizing.

[0066] 4. Breeding methods

[0067] (1) Take the rice parent seeds, soak them in nitric acid aqueous solution for 58 hours, completely eliminate the dormancy of the seeds, rinse them with water for 3 to 5 times, put them in a constant temperature box at 30°C to accelerate germination, unt...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for breeding multiple generations of paddy rice in one year. The method comprises the following steps: taking paddy rice seeds, breaking dormancy, accelerating germination and then carrying out direct seeding; after paddy rice enters a flowering stage, carrying out glume cutting, emasculation and pollination on a female parent; selecting seed-grain or brown rice matured at earliest time as a next-generation parent in a filling and ripening stage; and repeating the previous three steps until multiple generations of the paddy rice are obtained. According to the invention, the method employs breeding and cultivation manners like direct seeding culture, glume cutting and emasculation, germination acceleration and seeding of brown rice, and rapid dormancy breaking and germination acceleration via seed soaking with a nitric acid solution, so the whole growth period of paddy rice is shortened; and thus, breeding process is shortened, breeding of multiple generations of paddy rice in one year is realized, and the problem of a long breeding period in the prior art is overcome.

Description

technical field [0001] The invention relates to the technical field of breeding, in particular to a multi-generation rice breeding method per year. Background technique [0002] Rice is one of the main food crops in the world. Its yield and quality have a profound impact on the supply of international food and the improvement of people's living standards. Rice is an annual temperature-loving short-day crop, suitable for growth and reproduction in low-latitude areas with high temperatures or in seasons with high temperatures. Low temperature slows growth and development, and higher temperature accelerates growth and development. In addition to temperature, the length of rice growth period is mainly restricted by the length of light. When rice has a certain amount of vegetative growth, if it is in a short day In the photoperiod, the growth is accelerated and the heading is accelerated, on the contrary, if it is in a photoperiod with longer sunshine, the growth is slow and the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A01H1/02A01C1/00
Inventor 李金军李军高荣村陆金根李白
Owner ZHEJIANG JIAXING AGRI SCI ACADEMY INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap